My 4 year old son and 10 & 13 year old daughters (both of whom are highly ranked USTA junior players) use these to hit against our garage door. These balls are an invaluable tool in teaching young kids tennis as well as how to move their feet. I highly recommend them to anyone just learning or those who are already excellent players.
Purchased these balls along with a 17" inch Babolat racquet for my child's first birthday. These are great! Lightweight, soft, and large. What a great way to introduce tennis to a little one!
I partially tore my elbow tendon last July and now finally cleared to start to get back into tennis. It is an excellent tool as a part of re-entry to tennis after many months of physical therapy. It has much less impact on your arm than the regular ball as you try to get your arm/body to get use to tennis again :-)
At our school it is very important the safety of our students. This balls are great for the student's games during PE class and save.
Have always liked these balls for myself. I use them to hit against the garage door. My daughter likes them as well and will be swinging soon.